Ments



(No Model.)

' 0. H. EDWARDS.

I STOP MOTION FOR KNITTING MACHINES. No. 311,238. Patented Jan. 27,1885.

WITNESSES: INVENTOR:

ATTORNEYS.

N. PETERS. F'hulwliflmgraphen Wiil-mgtnn. D. c,

, UNITED STATES PATENT @ErioE.

OLIVER H. EDWARDS, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGN- MENTS,OF ONEHALF TO FREDERICK H. MOCOUN, OF SAME PLACE.

STOP-MOTION FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 311,238, dated January27, 1885.

' I Application filed September 21, 1883. (No model.)

To all whom it may concern.-

Be it known that I, OLIVER H. EDWARDS, of the city, county, and State ofNew York,

'haveinvented an Improvement in Stop-Motions for Knitting-Machines, ofwhich the following is a full, clear, and exact description. The objectof my invention is to provide a new and improved device forautomatically stopping a knitting-machine in case the thread IO breaks.

The invention consists in the peculiar construction and arrangement ofparts, as hereinafter fully described, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a plan view of a knittingma- 2c chine provided with myimproved stop-motion. Fig. 2 is an enlarged sectional view of the sameon the line :0 m, Fig. 1. 3 is a sectional view on the line 3 y, Fig. 1,of the parts shown in Fig. 2.

The revolving ring A of aknitting-machine is provided with an annularrecess, A, in its outer edge, in which recess a ring, B, is placed,which rests loosely on the bottom of the recess. The ring B is providedwith an out 0 wardly or laterally projecting stud, O. A cam, D, issecured to the lower end of each of the short shafts E, journaled inarms F, secured to the ring A, and projecting a short distance from thesame.

has one end secured in the end of an arm, F, is then coiled around theshaft E, and passed through or secured to the same, and is then extendedtoward the needle-ring Land has its end bent slightly to form a catchfor prevent- 0 ing the thread from slipping off the said wire. That edgeof each cam D toward the ring B is curved eceentrically, and can beroughened or serrated, as can also the outer surface of the ring B. Thering Ais provided on its under side with a circular rack, a, with whicha pinion, 12, engages, which is mounted on one end of a driving-shaft,H, carrying a fixed belt-pulley, H, and a loose belt-pulley, H. The beltJ passes between the prongs d of a A spring-wire, G,

belt-shifting fork secured to a longitudinally- 5o sliding rod, K,provided with a handle, K. A spiral spring,L,surrounding the rod K,presses the said rod in the direction from the pulley H toward thepulley Hthat is, the spring L automatically throws the belt J from thefixed pulley H on the loose pulley H when the rod K is released, ashereinafter described. The rod K is provided in its inner end with atransverse notch or recess, 9, into which the edge of a plate orblade,M, secured in alever, N, is drawn by a spring, 0, secured to the freeend of thelever and to the bed of the ma chine. A lever, P, pivoted tothe machineframe, has one end resting on the lever N, and the other endresting on the lower arm of an angular lever, Q, pivoted at its angle tothe frame of the machine. The upwardly-projecting curved shank of thelever Q, is provided on its inner edge with downwardly-projecting teethZ, adapted to engage with the teeth of a ratchet-wheel, R, mounted, onthe shaft H. A spring, Q, pressing against the free end of the bottomarm of the lever Q,

presses the upwardly-projecting arm of the lever against theratchetvheel,when the belt shifter rod K is released to shift the belt from thefixed to the loose pulley. A latch, S, is pivoted on the frame of themachine to swing in the horizontal plane, and is provided at one endwith an upwardly-projecting stem, S, adapted to be struck by the stud Gon the ring B.

The abovedescribed device is applicable to a knitting-machine havingvertical or h orizontal needles, or both, as shown in the drawings. Inbrief, it can be attached to any cireular-knitting inachine,the devicebeing modified in construction according to the construction of themachine.

The operation is as follows: The loose ring B is so adjusted that itsstud G will almost be in contact with the upwardly-projecting stem S ofthe latch S. The belt-shifter rod K is moved in the direction of thearrow a,whereby the belt J will be shifted on the fixed pulley H at thesame time the spring L is compressed and the notch g brought over theblade or plate M, which is drawn or snapped into the notch by the spring0, thereby locking the belt-shifting rod K in position. Theupwardlyprojecting arm of the lever Q is there by drawn from theratchet-wheel R by the lever N acting on the lever P, which in turn actsupon the lower arm of the said lever Q, and is held in thisposition bythe end of the latch S, against which the said arm of the lever Q ispressed by the spring Q. The end of the latch S against which the leverQ presses is notched, as shown in Fig.1, to re eeive and hold the lever,and to prevent the latch from being turned on its pivot by the pressureof the said lever. The machine now being in motion, the studs 0 of theloose rings -13 will be brought into contact with the stem S of thelatch S, and the lever Q, being pressed against the said latch by thespring Q, will prevent the said latch from being turned upon its pivotby the action of the pins of the loose ring until the latter is lockedto the ring A by the cams D, which are held a short distance away fromsaid loose ring by the threads 1, which threads pass over the ends ofthe wires G and press their free ends toward the center of theneedleeylinder. If a thread breaks, the free end of the correspondingspring-wire G is released, and is thrown in the direction of the arrow9, and at the same time the corresponding cam D is thrown in a likedirection, and is pressed against the ring B by the spiral spring formedby the wire G. The cam thus binds on the ring B and causes the said ringto revolve with the ring A in the direction of the arrow 2), therebycausing the stud O to strike the stem S of the latch S, and therebythrowing the outer end of the latch S toward the ring 13, and thusreleasing the upwardly-projecting toothed part of the lever Q, which ispressed against the ratchet-wheel It, by the spring Q acting on thebottom or outwardly-projeeting arm of the lever Q. The lever Q engagingwith the ratchet-Wheel on the driving-shaft immediately stops therotation of the said shat't. As'the spring Q throws theoutwardly-projecting arm of the lever Q upward, this arm throws upwardthe outer end of the lever 1, thereby depressing its inner end and atthe same time-depressing the lever N and drawing the plate or blade Mout of the notch g, and thus releasing the rod K, which is thrown in theinverse direction of the arrow to by its spring L, thereby shifting thebelt J from the fixed pulley H on the loose pulley H Having thusdescribed my invention, what I claim as new is 1. The combination, witha knitting-machine needle-ring, a revolving ring surrounding the same,the driving-shaft, a ratchetwheel thereon, and means for operating thedriving-shaft, of a loose ring surrounding the said revolving ring andprovided with a latorally-projecting stud, cams on the revolving ringadapted to clamp the loose ring to the revolving ring when the threadbreaks, a

latch engaging the stud of the loose ring, a lever adapted to engagesaid ratchetwheel, and a spring adapted to press the lever intoengagement with the ratchet-wheel, substantially as herein shown anddescribed.

2. The combination, with the needle-ring, the driving-shaft, aratchet-wheel thereon, a revolving ring, a loose ring surrounding therevolving ring, provided with a lateral stud, and means for lockingtheloose ring to the revolving ring and operating the machine, of alatch engaging the stud of the loose ring, a toothed lever adapted toengage the ratchet wheel, a spring adapted to press theleverintoengagement with the ratchet-wheel, a beltshit'ting fork, andintermediate mechanism for operating the toothed lever from thebeltshifting fork, substantially as herein shown and described.

3. The combination, with a knitting-machine needle-ring, arevolvingring,and means f for operating the machine, of a ring loosely mounted on therevolving ring, a stud projecting from the loose ring, the latch S, theelbow-lever Q having teeth, the ratchet-wheel R, the driving-shaft H,and means for automatically locking the loose ring on the revolving ringwhen the thread breaks, substantially as herein shown and described.

4. The combination, with a knitting-machine needle-ring, the revolvingring A, and means for operating the machine, of the loose ring 13, thestud O, the latch S, the elbow-lever Q, the levers I and N, the springsQ and O, the belt-shifter rod K, the spring L, and means forautomatically locking the loose ring 011 the revolving ring when athread breaks, substantially as herein shown and described.

5. The combination, with a knitting-machine needlering, the revolvingring A, and means for operating the machine, of the loose ring B, thestud O. the lever S, the elbow-lever Q, the levers P and N, the latterprovided with a plate or blade, M, the springs Q, and O, thebelt-shifter rod K, having a notch, g, the spring L, and means forlocking the ring B on the ring A automatically when a thread breaks,substantially as herein shown and described.

6. The combination, witha knitting-machine needlering, I, the revolvingring A, and means for operating the machine, of cams D, held on the ringA, the ring 13, provided with the stud G, the shafts E, the wires G,secured to and coiled around the said shafts E, and projecting towardthe middle of the needlering, and devices for shifting the belt andstopping the rotation of the drivingshatt, which devices are adapted tobe released and operated by the stud on the ring 13, substantially asherein shown and described.

OLIVER H. EDVARDS.

Witnesses:

OSCAR F. GUNZ, O. SnnewIcK.

